Add command for renaming a file

cmd/mv.go

@@ -2,15 +2,31 @@ package cmd
 
 import (
 	"fmt"
+	"os"
 
 	"github.com/spf13/cobra"
 )
 
 var mvCmd = &cobra.Command{
 	Use:   "mv",
 	Short: "Rename a note",
+	Args:  cobra.ExactArgs(2),
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Printf("not implemented\n")
+		oldpath := getPath(args[0])
+		newfile := args[1]
+		newpath := getPath(newfile)
+
+		_, err := os.Stat(newpath)
+		if err == nil {
+			fmt.Printf("cannot rename as '%s' already exists\n", newfile)
+			return
+		}
+
+		err = os.Rename(oldpath, newpath)
+		if err != nil {
+			fmt.Println(err)
+			return
+		}
 	},
 }
 

cmd/new.go

@@ -13,21 +13,21 @@ var newCmd = &cobra.Command{
 	Args:  cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
 		filename := args[0]
-		fullPath := getPath(filename)
+		path := getPath(filename)
 
-		_, err := os.Stat(fullPath)
+		_, err := os.Stat(path)
 		if err == nil {
 			fmt.Printf("%s already exists\n", filename)
 			return
 		}
 
-		_, err = os.Create(fullPath)
+		_, err = os.Create(path)
 		if err != nil {
 			fmt.Printf("error creating %s: %s\n", filename, err)
 			return
 		}
 
-		err = openFile(fullPath)
+		err = openFile(path)
 		if err != nil {
 			fmt.Println(err)
 			return

cmd/open.go

@@ -11,9 +11,9 @@ var openCmd = &cobra.Command{
 	Short: "Open an existing note",
 	Args:  cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
-		fullPath := getPath(args[0])
+		path := getPath(args[0])
 
-		err := openFile(fullPath)
+		err := openFile(path)
 		if err != nil {
 			fmt.Println(err)
 			return

cmd/rm.go

@@ -39,15 +39,15 @@ var rmCmd = &cobra.Command{
 	},
 	Run: func(cmd *cobra.Command, args []string) {
 		filename := args[0]
-		fullPath := getPath(filename)
+		path := getPath(filename)
 
-		_, err := os.Stat(fullPath)
+		_, err := os.Stat(path)
 		if errors.Is(err, os.ErrNotExist) {
 			fmt.Printf("%s does not exist\n", filename)
 			return
 		}
 
-		err = os.Remove(fullPath)
+		err = os.Remove(path)
 		if err != nil {
 			fmt.Printf("error deleting %s: %s\n", filename, err)
 			return